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  • Researchers advance understanding of enzyme that regulates DNA

    Physics professor Taekjip Ha and graduate student Jeehae Park used fluorescence resonance energy transfer to study how an important DNA enzyme regulates damaged sections of DNA. The red and green fluorescent dyes allow them to track a single enzyme's activity.

    Physics professor Taekjip Ha and graduate student Jeehae Park used fluorescence resonance energy transfer to study how an important DNA enzyme regulates damaged sections of DNA. The red and green fluorescent dyes allow them to track a single enzyme's activity.

    Photo by L. Brian Stauffer

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  • Editor's note: To contact Taekjip Ha, call (217) 265-0717; e-mail tjha@illinois.edu. The paper, "PcrA helicase dismantles RecA filments by reeling in DNA in uniform steps," is available online.